Pinned topicSCAS Beta 5 - cannot deploy to another SCE account

I have a trial SCE account where I created an instance of the service SCAS Beta 5.

With this trial account, I can only use 5 ips ( 4 if I take away the one used by SCAS ). The pattern I am trying to deploy uses more than 4 ips so I tried to set the IP Groups in SCAS to use a different SCE account where I have access to more ips.

Although I can set the the IP Group in the UI to the other account ( it validates the user/pwd and key ), when I try to deploy I get an exception that the vm's cannot be registered. Is this a bug or am I trying an unsupported scenario ?